10203311221 has 8 divisors (see below), whose sum is σ = 10650528000. Its totient is φ = 9756394032.

The previous prime is 10203311219. The next prime is 10203311227. The reversal of 10203311221 is 12211330201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10203311221 - 2¹ = 10203311219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10203311195 and 10203311204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10203311227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3846 + ... + 142903.

It is an arithmetic number, because the mean of its divisors is an integer number (1331316000).

Almost surely, 2^10203311221 is an apocalyptic number.

It is an amenable number.

10203311221 is a deficient number, since it is larger than the sum of its proper divisors (447216779).

10203311221 is a wasteful number, since it uses less digits than its factorization.

10203311221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149795.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 10203311221 its reverse (12211330201), we get a palindrome (22414641422).

The spelling of 10203311221 in words is "ten billion, two hundred three million, three hundred eleven thousand, two hundred twenty-one".